上海交通大学学报

上海交通大学学报 >

2023 , Vol. 57 >Issue 2: 201 - 212

DOI: https://doi.org/10.16183/j.cnki.jsjtu.2021.352

材料科学与工程

单向热塑性复合材料层压板偏轴拉伸试验及其数值模拟

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  • a.上海交通大学 机械与动力工程学院,上海 200240
    b.上海交通大学 航空航天学院,上海 200240
张健(1997-),硕士生,从事热塑性复合材料机械连接研究.

收稿日期: 2021-09-14

  修回日期: 2021-10-27

  录用日期: 2021-11-05

  网络出版日期: 2022-11-25

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Off-Axis Tensile Test and Numerical Simulation of Unidirectional Thermoplastic Composite Laminates

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  • a. School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China
    b. School of Aeronautics and Astronautics, Shanghai Jiao Tong University, Shanghai 200240, China

Received date: 2021-09-14

  Revised date: 2021-10-27

  Accepted date: 2021-11-05

  Online published: 2022-11-25

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摘要

AS4/PEEK作为一种高性能的热塑性复合材料在航空航天、军事和汽车等领域应用广泛.对不同角度的单向AS4/PEEK层压板进行偏轴拉伸试验,获得了相应的应力-应变曲线、拉伸强度和断裂面角度.在数值模拟中,采用单参数三维塑性模型描述AS4/PEEK的非线性力学行为,模型中的塑性参数使用信任域反射算法得到.结合LaRC05准则和裂纹带理论开发了基于Abaqus的用户材料子程序VUMAT,并将其应用于偏轴拉伸的数值模拟.结果显示该三维弹塑性损伤本构模型能够较准确地模拟AS4/PEEK的塑性效应,且预测的拉伸强度与试验结果吻合良好.本文提出的三维弹塑性损伤模型为热塑性复合材料塑性变形和损伤的综合分析提供了一种准确且有效的方法.

关键词： AS4/PEEK; 偏轴拉伸; 塑性模型; LaRC05准则; 裂纹带理论

本文引用格式

张健, 陈秀华, 陈勇, 范寅 . 单向热塑性复合材料层压板偏轴拉伸试验及其数值模拟[J]. 上海交通大学学报, 2023 , 57(2) : 201 -212 . DOI: 10.16183/j.cnki.jsjtu.2021.352

Abstract

As a high-performance thermoplastic composite material, AS4/PEEK has been widely used in aerospace, military, automotive, and other fields. After conducting the off-axial tensile test of unidirectional AS4/PEEK laminates with different angles, the relevant stress-strain curves and tensile strengths, as well as fracture plane angles are obtained. In simulation, a 3D elastic-plastic model where the parameters are determined by trust-region reflective algorithm is used to describe the nonlinear mechanical behavior of AS4/PEEK laminates. In combination with the LaRC05 criterion and the crack zone theory, a user material subroutine VUMAT based on Abaqus is developed and applied to the numerical simulation of off-axis tensile test. The numerical results show that the 3D elastic-plastic damage constitutive model can accurately simulate the plastic effect of AS4/PEEK laminates and the tensile strength predicted by the numerical method agrees well with those from the test. The proposed 3D elastic-plastic damage model provides an accurate and effective method for the comprehensive analysis of plastic deformation and damage of thermoplastic composites.

Key words： AS4/PEEK; off-axial tension; plastic model; LaRC05; crack band theory

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